Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. Digital Load for High-Current TestingFrom Necessity to Innovation Vocal RemoverInstant Karaoke Circuit Audio A/B Selector With Gain ControlSwitches from Microphone to Line Inputs Better Charging for the LIR2032Be Kind to Your Coin Cells Touch Sensing Made SimpleA DIY Guide for Any Microcontroller Universal Infrared Remote SwitchA New Life for Old Remotes Microcontroller-Powered Moo BoxMaking Playful Sounds With a Microcontroller USB Battery Interface Powering Low-Draw Devices With Power BanksA “Stay Alive” Solution Small Class-A Audio Amplifier With Current OutputDrive Speakers with Current Instead of Voltage Pseudo-Balanced ModuleHigh CMRR with Unbalanced Audio Links Ni-MH Cells Automatic ChargerRefill All Your Battery Packs in One Go! Thyristor-Based Power Supply Protection Fingerprint Sensor SwitchA Useful Proof-of-Identity Device DC-DC 3-A Power ConverterUpgrade Your Fixed-Voltage Sources Remote Water Heater MonitorVoltage and Current Detection for AC Lines Attenuators for Audio Signals (1)Adjustable Via Jumpers Pimp My Car Battery Charger (Part 1)Don’t Throw It Away, Mod It! A Board for the Blue OnePCB for Alps Motorized Potentiometer with Feedback 50-Hz Reference from 60-Hz Mains VoltageHow to Use 50-Hz Electronics in 60-Hz Environments Digital IsolatorsRealizing Galvanic Isolation Easily Compact 12-W Hi-Fi Mono AmplifierSmall But Powerful LM386 Ramp Generator Three-Phase GeneratorWith Raspberry Pi Pico Door Opener for the Musically Talented Elektor Classic: Surf SynthesizerOcean Watersports Background Sound Generator (OWBSG) Pimp my Car Battery Charger (Part 2)Don’t Throw It Away, Mod It! Lamp Current MonitorWith a Raspberry Pi Pico Infrared Telegraphy Fnirsi SWM-10Repair Battery Packs With This Portable Intelligent Spot Welding Machine Stereo Audio Codec for the ESP32 and Co.No Need to Be Afraid of Audio Measurement Technology Tin Soldering TechniquesMake Them Well Right Away! Attenuators for Audio Signals (2)Switching Via Relays USB-C PowerDrawing Power from USB-C Power Adapters Three Circuits with Two and Three Counter ICs4017 ICs Working Together Active Components – The Diode A Timer For Ultra-Long DelaysSet It, and Forget It! Jack In and Jack OutA Useful Insert Option for Audio Circuits Power an ESP32 from a Single Li-ion Cell Hexadoku

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The Power Delivery Board is essentially a sink controller board. It negotiates with the USB PD charger to obtain the desired voltage and current according to the specified configuration. The USB-C PD Power Delivery Board can be used in various applications where USB-C is utilized to power a product or project. It features a user-friendly DIP switch that allows you to select the desired output voltage or current from your USB PD charger. Additionally, it has an on-board DC-DC converter capable of generating either 5 V or 3.3 V, depending on the jumper setting. It can easily provide around 3.3 W of power.Note: More power can be drawn from the DC-DC converter if the USB PD voltage is lower (e.g., 9 V, 12 V) or if an external heatsink is used. Voltage and current selection or monitoring is possible through the I²C interface available on the 4-pin header. Specifications USB-C Input Power delivery up to 65 W via DIP switch and 100 W via I²C command (I²C pullups are not on the board). Please note that the 3.25 A setting (via DIP Switch) may not work with many USB-C PD chargers. We have also observed this during testing. An additional DC-DC Converter(TPS54302) is onboard to generate 3.3 V, 1 A/5 V, 0.65 A output so that you need fewer components on your application board. 4x Mounting holes for easy mounting LED indication for USB-C input, USB PD output and DC-DC converter output A 2-pin power terminal is provided for easy connection A 4-pin 2.54 mm header connector is provided for the I²C connection Both connectors will come unsoldered Dimensions: 50 x 35 mm

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The Raspberry Pi 27 W PD USB-C power supply is designed specifically to power the Raspberry Pi 5. It is also capable of delivering 5 V/3 A, 9 V/3 A, 12 V/2.25 A, 15 V/1.8 A to PD-compatible products, making it a good and cost-effective power supply for many general applications, such as charging smartphones and tablets. Specifications Input 100-240 V AC Output 5 A @ 5.1 V, 3 A @ 9 V, 2.25 A @ 12 V, 1.8 A @ 15 V Connector USB-C Length 1.2 m Color White Region UK

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The DiP-Pi PIoT is an Advanced Powered, WiFi connectivity System with sensors embedded interfaces that cover most of possible needs for IoT application based on Raspberry Pi Pico. It can supply the system with up to 1.5 A @ 4.8 V delivered from 6-18 VDC on various powering schemes like Cars, Industrial plant etc., additionally to original micro-USB of the Raspberry Pi Pico. It supports LiPo or Li-Ion Battery with Automatic Charger as also automatic switching from cable powering to battery powering or reverse (UPS functionality) when cable powering lost. Extended Powering Source (EPR) is protected with PPTC Resettable fuse, Reverse Polarity, as also ESD. The DiP-Pi PIoT contains Raspberry Pi Pico embedded RESET button as also ON/OFF Slide Switch that is acting on all powering sources (USB, EPR or Battery). User can monitor (via Raspberry Pi Pico A/D pins) battery level and EPR Level with PICO’s A/D converters. Both A/D inputs are bridged with 0402 resistors (0 OHM) therefore if for any reason user needs to use those Pico pins for their own application can be easy removed. The charger is automatically charging connected battery (if used) but in addition user can switch charger ON/OFF if their application needs it. DiP-Pi PIoT can be used for cable powered IoT systems, but also for pure Battery Powered System with ON/OFF. Each powering source status is indicated by separate informative LEDs (VBUS, VSYS, VEPR, CHGR, V3V3). User can use any capacity of LiPo or Li-Ion type; however, must take care to use PCB protected batteries with max discharge current allowed of 2 A. The embedded battery charger is set to charge battery with 240 mA current. This current is set by resistor so if user need more/less can himself to change it. The DiP-Pi PIoT is also equipped with WiFi ESP8266 Clone module with embedded antenna. This feature open a wide range of IoT applications based on it. In Addition to all above features DiP-Pi PIoT is equipped with embedded 1-wire, DHT11/22 sensors, and micro–SD Card interfaces. Combination of the extended powering, battery, and sensors interfaces make the DiP-Pi PIoT ideal for IoT applications like data logger, plants monitoring, refrigerators monitoring etc. DiP-Pi PIoT is supported with plenty of ready to use examples written in Micro Python or C/C++. Specifications General Dimensions 21 x 51 mm Raspberry Pi Pico pinout compatible Independent Informative LEDs (VBUS, VSYS, VEPR, CHGR, V3V3) Raspberry Pi Pico RESET Button ON/OFF Slide Switch acting on all powering sources (USB, EPR, Battery) External Powering 6-18 VDC (Cars, Industrial Applications etc.) External Power (6-18 VDC) Level Monitoring Battery Level Monitoring Inverse Polarity Protection PPTC Fuse Protection ESD Protection Automatic Battery Charger (for PCB protected LiPo, Li-Ion – 2 A Max) Automatic/User Control Automatic Switch from Cable Powering to Battery Powering and reverse (UPS Functionality) Various powering schemes can be used at the same time with USB Powering, External Powering and Battery Powering 1.5 A @ 4.8 V Buck Converter on EPR Embedded 3.3 V @ 600 mA LDO ESP8266 Clone WiFi Connectivity ESP8266 Firmware Upload Switch Embedded 1-wire Interface Embedded DHT-11/22 Interface Powering Options Raspberry Pi Pico micro-USB (via VBUS) External Powering 6-18 V (via dedicated Socket – 3.4/1.3 mm) External Battery Supported Battery Types LiPo with protection PCB max current 2A Li-Ion with protection PCB max current 2A Embedded Peripherals and Interfaces Embedded 1-wire interface Embedded DHT-11/22 Interface Micro SD Card Socket Programmer Interface Standard Raspberry Pi Pico C/C++ Standard Raspberry Pi Pico Micro Python Case Compatibility DiP-Pi Plexi-Cut Case System Monitoring Battery Level via Raspberry Pi Pico ADC0 (GP26) EPR Level via Raspberry Pi Pico ADC1 (GP27) Informative LEDs VB (VUSB) VS (VSYS) VE (VEPR) CH (VCHR) V3 (V3V3) System Protection Direct Raspberry Pi Pico Hardware Reset Button ESD Protection on EPR Reverse Polarity Protection on EPR PPTC 500 mA @ 18 V fuse on EPR EPR/LDO Over Temperature protection EPR/LDO Over Current protection System Design Designed and Simulated with PDA Analyzer with one of the most advanced CAD/CAM Tools – Altium Designer Industrial Originated PCB Construction 2 ozcopper PCB manufactured for proper high current supply and cooling 6 mils track/6 mils gap technology 2 layers PCB PCB Surface Finishing – Immersion Gold Multi-layer Copper Thermal Pipes for increased System Thermal Response and better passive cooling Downloads Datasheet Manual

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This is an I/O expansion kit designed for Raspberry Pi, which provides 5 sets of 2x20 pinheaders, that means a handy way to 'stack' multi different HATs together, and use them as a specific combination / project. Features Standard Raspberry Pi connectivity, directly pluggable OR through ribbon cable 5 sets of 2x20 pinheaders, connect multi HATs together USB external power port, provides enough power supply for multi HATs Clear and descriptive pin labels for easy use Reserved jumper pads on the bottom side, pin connections are changeable by soldering, to avoid pin conflicts Note: make sure there are no any pin conflicts between the HATs you want to use together before connecting. Specifications Dimensions: 183 × 65 mm Mounting hole size: 3 mm Included 1x Stack HAT 1x Ribbon cable 40-Pin 1x 2x20 male pinheader 1x RPi screws pack (4pcs) x1

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The SparkFun RedBoard Qwiic is an Arduino-compatible board that combines features of different Arduinos with the Qwiic Connect System. Features ATmega328 microcontroller with Optiboot Bootloader R3 Shield Compatible CH340C Serial-USB Converter 3.3 V to 5 V Voltage Level Jumper A4 / A5 Jumpers AP2112 Voltage Regulator ISP Header Input voltage: 7 V - 15 V 1 Qwiic Connector 16 MHz Clock Speed 32 k Flash Memory All SMD Construction Improved Reset Button

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The SEQURE ES666 is a smart electric screwdriver designed for precision tasks such as assembling and disassembling electronics, RC models, drones, and more. It features multiple operation modes: Sensing Mode, Fixed Mode, and Automatic Mode, allowing for versatile use. The device includes an OLED display and a 600 mAh rechargeable battery providing up to 4 hours of no-load operation. Features Smart Control: Supports angle sensing control and adjustable sensitivity. It starts and stops automatically for hands-free operation, and stops automatically when the screw is fully tightened. Enhanced Visibility: Equipped with front-facing shadowless LED lights with on/off and delay modes. Robust Design: Constructed with a metal shell and anti-slip strips for a secure grip that prevents rolling. High-Quality Bits: Includes durable S2 steel bits with built-in strong magnets for fast screw assembly and disassembly. Powerful Performance: Features a metal gear reduction motor and a built-in high-capacity battery for stable, continuous use. Smart Display: Comes with a dynamic multi-functional UI interface and supports firmware upgrades. Versatile Use: Offers 7 torque settings to suit a variety of tasks – ideal for repairing, assembling, or disassembling RC models, drones, mobile phones, computers, watches, glasses, and other electronics. Specifications Manual Torque 22kgf.cm / 2.2N.m Torque Gears 7 Battery 600 mAh No-load Speed 250 rpm Working Time No-load 4h Charging USB-C 5 V Bits 4 mm Hexagon Display 128 x 32 OLED Front Lighting LED Working Modes Sensing, Fixed, Automatic Firmware Upgrades Yes Menu Languages English, Russian, and Chinese Dimensions 15 x 16 x 140 mm Weight (Screwdriver) 57 g Included 1x SEQURE ES666 Electric Screwdriver 30x Magnetic S2 steel bits 1x USB-C charging cable 1x Carrying case

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35 Touch Develop & MicroPython Projects The BBC micro:bit is a credit sized computer based on a highly popular and high performance ARM processor. The device is designed by a group of 29 partners for use in computer education in the UK and will be given free of charge to every secondary school student in the UK. The device is based on the Cortex-M0 processor and it measures 4 x 5 cm. It includes several important sensors and modules such as an accelerometer, magnetometer, 25 LEDs, 2 programmable push-button switches, Bluetooth connectivity, micro USB socket, 5 ring type connectors, and a 23-pin edge connector. The device can be powered from its micro USB port by connecting it to a PC, or two external AAA type batteries can be used. This book is about the use of the BBC micro:bit computer in practical projects. The BBC micro:bit computer can be programmed using several different programming languages, such as Microsoft Block Editor, Microsoft Touch Develop, MicroPython, and JavaScript. The book makes a brief introduction to the Touch Develop programming language and the MicroPython programming language. It then gives 35 example working and tested projects using these language. Readers who learn to program in Touch Develop and MicroPython should find it very easy to program using the Block Editor or any other languages. The following are given for each project: Title of the project Description of the project Aim of the project Touch Develop and MicroPython program listings Complete program listings are given for each project. In addition, working principles of the projects are described briefly in each section. Readers are encouraged to go through the projects in the order given in the book.

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Specifications Datasheet Resonance Frequency (FO): 680 ±20% Hz at 1 V Rated Impedance: 8 ±20% Ω (at 1 KHz) Frequency Range: ~600-10 KHz Rated Input Power: 0.25 W Max Input Power: 0.5 W Temperature Range: -20ºC ~ 55ºC Dimensions Diameter: 28 mm / 1.1' Height: 4.5 mm Weight: 6 g

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This PCIe to M.2 adapter is specifically designed for the Raspberry Pi 5. It supports the NVMe protocol for M.2 SSDs, enabling fast read and write operations, and adheres to the HAT+ standard. The adapter is compatible with M.2 SSDs in the 2230 and 2242 sizes. Included 1x PCIe to M.2 HAT+ Adapter 1x 2x20 Pin header 1x 16P cable (40 mm) 1x Standoff pack Downloads Wiki

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This is a set of five magnetic, telescopic whip antennas – with 100 MHz to 1 GHz tuning range – that can be used with KrakenSDR for direction finding. The magnets are strong and will be secure on the roof of a moving car. It includes a set of five two-meter, LMR100-equivalent coax cables that have been length matched for better performance.

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T80-B (T80-D08) Soldering Tip for Soldering Station AE970D (0.8 mm, pointed)

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This clear acrylic case is the official case for the HackRF One board. It can replace the standard black plastic case of the HackRF One. Assembly Instructions Use a guitar pick or spudger to extract the HackRF One circuit board from the black plastic case. Insert one long screw into each corner of the bottom acrylic panel. Secure each long screw with a short (5 mm) spacer on the opposite side of the panel. Place the HackRF One circuit board (facing up) on top of the bottom panel, fitting the ends of the long screws through the corner mounting holes of the circuit board. Secure the circuit board with one long (6 mm) spacer in each corner. Place the top acrylic panel on top of the circuit board, aligning the cutouts with the circuit board’s expansion headers. Secure each corner with a short screw. Note: Do not overtighten! Hand-tighten only at every step.

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STmicroelectronics’ wireless IoT & wearable sensor development kit ‘SensorTile.box’ is a portable multi-sensor circuit board housed in a plastic box and developed by STMicroelectronics. It is equipped with a high-performance 32-bit ARM Cortex-M4 processor with DSP and FPU, and various sensor modules, such as accelerometer, gyroscope, temperature sensor, humidity sensor, atmospheric pressure sensor, microphone, and so on. SensorTile.box is ready to use with wireless IoT and Bluetooth connectivity that can easily be used with an iOS or Android compatible smartphone, regardless of the level of expertise of the users. SensorTile.box is shipped with a long-life battery and all the user has to do is connect the battery to the circuit to start using the box. The SensorTile.box can be operated in three modes: Basic mode, Expert mode, and Pro mode. Basic mode is the easiest way of using the box since it is pre-loaded with demo apps and all the user has to do is choose the required apps and display or plot the measured data on a smartphone using an app called STE BLE Sensor. In Expert mode users can develop simple apps using a graphical wizard provided with the STE BLE Sensor. Pro mode is the most complex mode allowing users to develop programs and upload them to the SensorTile.box. This book is an introduction to the SensorTile.box and includes the following: Brief specifications of the SensorTile.box; description of how to install the STE BLE Sensor app on an iOS or Android compatible smartphone required to communicate with the box. Operation of the SensorTile.box in Basic mode is described in detail by going through all of the pre-loaded demo apps, explaining how to run these apps through a smartphone. An introduction to the Expert mode with many example apps developed and explained in detail enabling users to develop their own apps in this mode. Again, the STE BLE Sensor app is used on the smartphone to communicate with the SensorTile.box and to run the developed apps. The book then describes in detail how to upload the sensor data to the cloud. This is an important topic since it allows the sensor measurements to be accessed from anywhere with an Internet connection, at any time. Finally, Pro mode is described in detail where more experienced people can use the SensorTile.box to develop, debug, and test their own apps using the STM32 open development environment (STM32 ODE). The Chapter explains how to upload the developed firmware to the SensorTile.box using several methods. Additionally, the installation and use of the Unicleo-GUI package is described with reference to the SensorTile.box. This PC software package enables all of the SensorTile.box sensor measurements to be displayed or plotted in real time on the PC.

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The JOY-iT VAX-1030 multifunction meter measures voltage, current, energy, power, temperature, real-time capacity, and charge/discharge durations in DC circuits. The display can be connected to the measuring module either via a micro-USB cable or wirelessly via radio transmission. A total of 26 communication channels allow multiple devices to communicate with the meter simultaneously. The integrated relay offers overvoltage, undervoltage, and overcurrent protection. Additionally, the circuit can be manually disconnected. Specifications Voltage Range 0-100 V Voltage Resolution 0.01 V Voltage Accuracy ±2% - 3 Digit Current Range 1-30 A Current Resolution 0.01 A Power Range 0 W - 200 kW Power Resolution 0.001 W Working Measuring Range 0 W - 4000 kWh Working Measuring Resolution 0.001 Wh Load Display Range 0 Ah - 2000 kWh Load Display Resolution 0.001 Ah Temperature Range -20-120 °C Time Range 0-99 days Time Resolution 1 sec Negative Overcurrent Protection 0 A - -300 A Positive Overcurrent Protection 0 A - 300 A Overvoltage Protection (OVP) 0 V - 100 V Undervoltage Protection (LVP) 0 V - 100 V Protection Delay Time 0 - 10 sec Relays Internal Communication Channels A-Z (26 channels) Address Range 01-99 Communication Range Up to 10 m Dimensions 113.2 x 57.2 x 48.8 mm Weight 315 g

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The Picon Zero is an add-on for the Raspberry Pi. It has the same size as a Raspberry Pi Zero, making it ideal to function as a pHat. Of course, it can be used on any other Raspberry Pi via a 40-pin GPIO connector. As well as two full H-Bridge motor drivers, the Picon Zero has several Input/Output pins giving you multiple configuration options. That allows you to easily add outputs or analog inputs to your Raspberry Pi without any complicated software or kernel-specific drivers. At the same time, it opens up 5 GPIO pins from the Raspberry Pi, and it provides the interface for an HC-SR04 ultrasonic distance sensor. The Picon Zero comes with all components, including the headers and screw terminals, fully soldered. Soldering isn't required. You can use it right out of the box. Features pHat format PCB: 65 mm x 30 mm Two full H-Bridge motor drivers. Drive up to 1.5 A continuously per channel, at 3 V - 11 V. Each motor output has both a 2-pin male header and a 2-pin screw terminal. The motors can be powered from the Picon Zero's 5 V or an external power source (3 V - 11 V). The Picon Zero's 5 V can be selected to be from the Raspberry Pi's 5 V line, or a USB connector on the Picon Zero. That means that you can effectively have 2 USB battery banks: one to power the servos and motors on the Picon Zero and the other to power the Pi. 4 Inputs that can accept up to 5 V. These inputs can be configured as follows: Digital inputs Analog inputs DS18B20 DHT11 6 Outputs that can drive 5 V and be configured as: Digital Output PWM Output Servo NeoPixel WS2812 All Inputs and Outputs use GVS 3-pin male headers. 4-pin female header that connects directly to an HC-SR04 ultrasonic distance sensor. 8-pin female header for Ground, 3.3 V, 5 V, and 5 GPIO signals allowing you to add their additional features.

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Add colors to your projects with this collection of red, green, yellow, blue and white LEDs. They come with various current limiting resistors in order to protect the parts and control the brightness.Included 10 mm LEDs 1x red 1x green 1x yellow 1x blue 1x white 5 mm LEDs 5x red 5x green 5x yellow 5x blue 5x white 3 mm LEDs 5x red 5x green 5x yellow 5x blue 5x white 25x 330 Ω resistors 10x 1 kΩ resistors 10x 10 kΩ resistors 10x 100 kΩ resistors 10x 1 MΩ resistors

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Ready to explore the world around you? By attaching the Sense HAT to your Raspberry Pi, you can quickly and easily develop a variety of creative applications, useful experiments, and exciting games. The Sense HAT contains several helpful environmental sensors: temperature, humidity, pressure, accelerometer, magnetometer, and gyroscope. Additionally, an 8x8 LED matrix is provided with RGB LEDs, which can be used to display multi-color scrolling or fixed information, such as the sensor data. Use the small onboard joystick for games or applications that require user input. In Innovate with Sense HAT for Raspberry Pi, Dr. Dogan Ibrahim explains how to use the Sense HAT in Raspberry Pi Zero W-based projects. Using simple terms, he details how to incorporate the Sense HAT board in interesting visual and sensor-based projects. You can complete all the projects with other Raspberry Pi models without any modifications. Exploring with Sense HAT for Raspberry Pi includes projects featuring external hardware components in addition to the Sense HAT board. You will learn to connect the Sense HAT board to the Raspberry Pi using jumper wires so that some of the GPIO ports are free to be interfaced to external components, such as to buzzers, relays, LEDs, LCDs, motors, and other sensors. The book includes full program listings and detailed project descriptions. Complete circuit diagrams of the projects using external components are given where necessary. All the projects were developed using the latest version of the Python 3 programming language. You can easily download projects from the book’s web page. Let’s start exploring with Sense HAT.

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Elektor Magazine EN January/February 2021 (PDF)

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SHIM is an old Yorkshire term meaning 'Shove Hardware In Middle' - we use it for Raspberry Pi add-ons that are designed to be sandwiched between your Pi and a HAT or mini HAT. This one has a clever friction fit header that slips handily over your GPIO pins, doesn't need soldering*, and is easily removable. The MAX98357A combined DAC / amplifier chip takes high-quality digital audio from your Pi and amplifies it so it can be used with an unpowered speaker. The push-fit connectors make it straightforward to connect up your speaker, whether it's a bookshelf or floor-standing speaker, the speaker in an old radio, or any other speaker you might have laying around. Because Audio Amp SHIM adds no extra bulk to your Pi it's perfect for building into a compact enclosure - you could use it to make a tiny MP3 player to play local files or stream from services like Spotify, give a vintage radio the ability to play digital radio streams or incorporate bleepy noises into your very own retro handheld. It's also a handy way to add audio output to your Pi Zero or Pi 400! Please note: Raspberry Pi and speakers are not included with this board. Features MAX98357A DAC / amplifier chip Mono 3W audio out Push-fit speaker terminals SHIM-format board with friction-fit connectors 2x mounting holes (M2.5) for if you want to secure everything together with bolts Fully-assembled No soldering required (*unless you're using a Pi that comes without a header) Compatible with all 40-pin header Raspberry Pi models Software The easiest way to get everything set up is to use Pimoroni's Pirate Audio software and installer which configures I2S audio, as well as installing Mopidy and our custom Pirate Audio plugins which will let you stream Spotify and play local files. Here's how to get started: Set an SD card up with the latest version of Raspberry Pi OS. Connect to Wi-Fi or a wired network. Open a terminal and type the following:git clone https://github.com/pimoroni/pirate-audiocd pirate-audio/mopidysudo ./install.sh Reboot your Pi Downloads MAX98357A Datasheet Pirate Audio software Schematic

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Nowadays, more and smarter phones and laptops adopt USB-C ports for its powerful function that can transmit power, data, and video information. USB-C solution can also make the device much thinner compared to the Thunderbolt 3 or HDMI-compatible port. That’s why we the CrowVi portable USB-C monitor was created. The super thin CrowVi 13.3' monitor has 2 USB-C ports, one is for power delivery, and the other is for data transmission of video and touch screen commands. The screen also can be connected through the mini HDMI-compatible port. The resolution of CrowVi is 1920x1080, which will provide a better experience for gaming and watching movies. Features CrowVi shell is made of aluminum alloy, its thickness is as thin as 5 mm, and the screen border is as narrow as 6 mm. The whole monitor looks exquisite and elegant. CrowVi can not only act as the dual monitor for smartphones, and laptops but also as the single monitor for gaming devices and some computer mainframes like Mac mini, Raspberry Pi, etc. CrowVi brings you a much larger view compared to the phone. It enables better experiences for gaming and watching movies. Specifications Screen 13.3' TFT IPS LCD Screen Size 294.5 x 164 mm Thickness 5-10 mm Resolution 1920 x 1080 Brightness 300 nits Refresh Rate 60 Hz Color Gamut 16.7M, NTSC 72%, sRGB up to 100% Contrast 800:1 Backlight LED Viewing Angle 178° Aspect Ratio 16:9 Speaker Dual speakers 8 Ω, 2 W Shell Aluminum alloy Input Mini-HD, Type-C, PD Output 3.5 mm headphone jack Power PD 5-20 V or USB-C 3.0 Operating Temperature 0-50°C Dimensions 313 x 198 x 10 mm Weight (Smart Case) 350 g Weight (Monitor) 700 g Included 13.3-inch Touch screen monitor Smart case USB-C to USB-C cable (1 m) USB-A to USB-C power cable (1 m) HDMI to mini-HDMI cable (1 m) Power adapter (5 V/2 A) HDMI to mini-HDMI adapter Dust cloth User manual Downloads User manual

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This tool set contains essential tools for all kinds of electronic work. Included Soldering iron Desoldering pump Precision screwdriver 2.5x75 mm Screwdriver 3x75 mm Screwdriver 5x75 mm Screwdriver 6x125 mm Long nose plier (5') Diagonal cutting plier (4.5') IC extractor Wire stripper & cutter Multimeter Hex key wrench Soldering wire Component storage box Tweezers (Long nose) Bag size: 340 x 210 x 50 mm

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The M12 Mount Lens (12 MP, 8 mm) is ideal for use with the Raspberry Pi HQ Camera Module, offering sharp and detailed imaging for a wide range of applications.

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ATOM U is a compact low-power consumption speech recognition IoT development kit. It adopts an ESP32 chipset, equipped with 2 low-power Xtensa 32-bit LX6 microprocessors with the main frequency of up to 240 MHz. Built-in USB-A interface, IR emitter, programmable RGB LED. Plug-and-play, easy to upload and download programs. Integrated Wi-Fi and digital microphone SPM1423 (I2S) for the clear sound record. suitable for HMI, Speech-to-Text (STT). Low-code development ATOM U supports UIFlow graphical programming platform, scripting-free, cloud push; Fully compatible with Arduino, MicroPython, ESP32-IDF, and other mainstream development platforms, to quickly build various applications. High integration ATOM U contains a USB-A port for programming/power supply, IR emitter, programmable RGB LED x1, button x1; Finely tuned RF circuit, providing stable and reliable wireless communication. Strong expandability ATOM U is easy access to M5Stack's hardware and software system. Features ESP32-PICO-D4 (2.4GHz Wi-Fi dual mode) Integrated programmable RGB LED and button Compact design Built-in IR emitter Expandable pinout and GROVE port Development platform: UIFlow MicroPython Arduino Specifications ESP32-PICO-D4 240MHz dual core, 600 DMIPS, 520KB SRAM, 2.4G Wi-Fi Microphone SPM1423 Microphone sensitivity 94 dB SPL@1 KHz Typical value: -22 dBFS Microphone signal-to-noise ratio 94 dB SPL@1 KHz, A-weighted Typical value: 61.4 dB Standby working current 40.4 mA Support input sound frequency 100 Hz ~ 10 KHz Support PDM clock frequency 1.0 ~ 3.25 MHz Weight 8.4 g Product size 52 x 20 x 10 mm Downloads Documentation

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